{"product_id":"swt3968-trane-l190f-m-r-rollout-switch","title":"SWT3968 Trane L190F M\/R ROLLOUT SWITCH","description":"\u003ch1\u003eSWT3968 Trane L190F M\/R ROLLOUT SWITCH\u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eTrane SWT3968 Rollout Switch\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003eL190F manual reset flame rollout safety switch\u003c\/strong\u003e designed to protect Trane, American Standard, and compatible gas furnace systems from unsafe burner flame conditions and excessive temperatures.\u003c\/p\u003e\n\u003cp\u003eRated at \u003cstrong\u003e190°F (L190F)\u003c\/strong\u003e, the SWT3968 monitors the burner compartment for abnormal heat or flame rollout conditions. If temperatures exceed the switch's safety threshold, the switch opens the control circuit and shuts down furnace operation. Unlike automatic reset limits, the \u003cstrong\u003eSWT3968 requires manual reset\u003c\/strong\u003e, helping ensure the underlying cause of the fault is diagnosed and corrected before the furnace is returned to service.\u003c\/p\u003e\n\u003cp\u003eThis safety device plays a critical role in protecting the heat exchanger, burner assembly, wiring, and surrounding furnace components from damage caused by blocked heat exchangers, venting restrictions, or combustion issues.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e Cross‑Reference \u003c\/h2\u003e\n\u003ch4\u003eReplaces 10123537 Goodman manual reset limit switch L190F\u003c\/h4\u003e\n\u003ch4\u003eL190F Manual reset limit switch \u003cbr\u003eSize 36TXV16\u003c\/h4\u003e\n\u003ch3\u003e\u003cstrong\u003eDirect OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSWT3968\u003c\/strong\u003e — Trane Rollout Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatible Brands\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTrane\u003c\/li\u003e\n\u003cli\u003eAmerican Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e L190F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 190°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Manual Reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Flame Rollout Safety Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Gas Furnace Safety Circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBurner Compartment Protection\u003c\/li\u003e\n\u003cli\u003eFlame Rollout Detection\u003c\/li\u003e\n\u003cli\u003eFurnace Safety Shutdown\u003c\/li\u003e\n\u003cli\u003eGas Furnace Safety Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eRelated Components\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Limit Switches\u003c\/li\u003e\n\u003cli\u003ePressure Switches\u003c\/li\u003e\n\u003cli\u003eDraft Inducer Assemblies\u003c\/li\u003e\n\u003cli\u003eFurnace Control Boards\u003c\/li\u003e\n\u003cli\u003eBurner Assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e Technician Notes\u003c\/h2\u003e\n\u003ch3\u003eCommon Causes of Rollout Switch Trips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCracked heat exchanger\u003c\/li\u003e\n\u003cli\u003eBlocked flue or vent pipe\u003c\/li\u003e\n\u003cli\u003eFailed inducer motor\u003c\/li\u003e\n\u003cli\u003eRestricted combustion air\u003c\/li\u003e\n\u003cli\u003eBurner misalignment\u003c\/li\u003e\n\u003cli\u003eDelayed ignition\u003c\/li\u003e\n\u003cli\u003eBlocked heat exchanger passages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace completely inoperative\u003c\/li\u003e\n\u003cli\u003eRollout switch open fault\u003c\/li\u003e\n\u003cli\u003eManual reset button popped\u003c\/li\u003e\n\u003cli\u003eBurners shut down shortly after ignition\u003c\/li\u003e\n\u003cli\u003eFurnace lockout conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNever bypass a rollout switch.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDetermine and correct the cause before resetting or replacing.\u003c\/li\u003e\n\u003cli\u003eInspect heat exchanger for damage.\u003c\/li\u003e\n\u003cli\u003eCheck venting system for restrictions.\u003c\/li\u003e\n\u003cli\u003eVerify proper combustion and burner flame pattern.\u003c\/li\u003e\n\u003cli\u003eTest furnace operation after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":40295971094594,"sku":"SWT3968","price":68.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-10-29102526.png?v=1793294743","url":"https:\/\/hvacpartstore.com\/products\/swt3968-trane-l190f-m-r-rollout-switch","provider":"HVACpartstore","version":"1.0","type":"link"}